Healthcare shares are down ahead of the Supreme Court ruling on Obamacare, which is due very...

Healthcare shares are down ahead of the Supreme Court ruling on Obamacare, which is due very soon, with the Health Care Select Sector SPDR Fund (XLV) -0.5%. Among insurers, UnitedHealth (UNH) is -1.7%, Aetna (AET) -1.1%, and Coventry Health Care (CVH) -0.8%.